Anatomy & Histology · single question
What are the LIMITS (boundaries) of the Infratemporal Space?
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Correct answer: C. Lateral pterygoid muscle and masseter muscle (with ramus of mandible)
Lateral pterygoid and masseter / ramus of mandible (C). The infratemporal fossa boundaries:
• Anterior: Posterior surface of maxilla
• Posterior: Tympanic plate and styloid process
• Medial: Lateral pterygoid plate
• Lateral: Ramus of mandible
• Superior: Infratemporal surface of greater wing of sphenoid
• No bony floor (inferiorly open)
Contents: Mandibular nerve (V3), maxillary artery, pterygoid venous plexus, pterygoid muscles (medial and lateral).
• Infratemporal space infections (from lower 3rd molars, maxillary molars) can spread to masticator space and parapharyngeal space — dangerous deep space infections.
• Anterior: Posterior surface of maxilla
• Posterior: Tympanic plate and styloid process
• Medial: Lateral pterygoid plate
• Lateral: Ramus of mandible
• Superior: Infratemporal surface of greater wing of sphenoid
• No bony floor (inferiorly open)
Contents: Mandibular nerve (V3), maxillary artery, pterygoid venous plexus, pterygoid muscles (medial and lateral).
• Infratemporal space infections (from lower 3rd molars, maxillary molars) can spread to masticator space and parapharyngeal space — dangerous deep space infections.
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